330 Hymenoptera in America North of Mexico 



populneus (Ratzeburg). Ont., Sask., Colo., Wash.; Europe. Host: Saperda populnea (L.). This 

 host is recorded from Europe, but one North American specimen has been reared from 

 an unknown borer in Populus sp. 



Ephialtes populneus Ratzeburg, 1848. Ichn. d. Forstins., v. 2, p. 100. 6,9. 



Ephialtes abbreviatus Thomson, 1877. Opusc. Ent. 8: 740. 6,9. 



Taxonomy: Hinz, 1961. Deut. Ent. Ztschr. (N. F.) 8: 254-255. 

 pterelas (Say). N. B. s. to S. C, w. to B. C. and Oreg.; Europe. 



Ichneumon (Pimpla) pterelas Say, 1829. Contrib. Maclurian Lyceum to Arts and Sci. 1: 71. 



9. 

 Ephialtes discrepans Hensch, 1929; 1930. Konowia 8: 145; 9: 74. 6. 



Taxonomy: Cushman and Gahan, 1921. Ent. Soc. Wash., Proc. 23: 166. 

 pygmaeus (Walsh). N. H. s. to N. C, w. to B. C. and Calif. Host: Plectrura spinicauda Mann. 



Ephialtes pygmaeus Walsh, 1873. Acad. Sci. St. Louis, Trans. 3: 111. 9. 

 sericeus (Hartig). N. B., Que., Ont., Alaska, Yukon, B. C; Europe. Host: Tetropium 

 cinnamopterum Kby. 

 C losterocerus sericeus Hartig, 1847. Naturw. Ver. Harz, Ber. 1846-1847, p. 18. 6. 

 taeniatus Townes. Ariz., Calif. Host: Chrysobothris edwardsii Horn. 



Dolichomitus taeniatus Townes, 1960. In Townes and Townes, U. S. Natl. Mus. Bui. 216 

 (pt. 2): 118. (J, 9. 

 terebrans nubilipennis (Viereck). N. S. s. to N. C, w. to B. C. and Calif. Host: Pissodes dubius 

 Rand., P. engelmanni Hopk., P.fasciatus LeC, P.fraseri Hopk., P. rotundatus LeC. D. 

 terebrans terebrans (Ratzeburg) occurs in Europe. 

 Exeristes nubilipennis Viereck, 1912. U. S. Natl. Mus., Proc. 42: 638. 9. 

 Exeristes hyalinipennis Viereck, 1912. U. S. Natl. Mus., Proc. 42: 638. 9. 



Biology: Taylor, 1929. Ent. Amer. 10: 26-30, 68. 

 tuberculatus tuberculatus (Geoffroy). N. B. s. to N. Y., w. to Alaska and Oreg.; Europe, 



northern Asia (excluding Japan). Host: Hylobius pinicola (Coup.), Monochamus sp., M. 



scutellatus (Say). A second subspecies, D. t. jezoensis (Uchida), occurs in Japan. 

 Ichneumon tuberculatus Geoffroy, 1785. In Fourcroy, Ent. Parisiensis, v. 2, p. 385. 9. 

 Ichneumon leucoptenis Gmelin, 1790. In Linnaeus, Syst. Nat., Ed. 13, p. 2699. 6 ? 



Uncertain syn. 

 Ichneumon hyalinus Gmelin, 1790. In Linnaeus, Syst. Nat., Ed. 13, p. 2700. 9. Uncertain 



syn. 

 Ichneumon crispus Christ, 1791. Naturgesch. Class. Nomencl. Ins., p. 364. 9. Uncertain 



syn. 

 Ichneumon fluctuans Christ, 1791. Naturgesch. Class. Nomencl. Ins., p. 365. 9. Uncertain 



syn. 

 Ephialtes parallelus Thomson, 1888. Opusc. Ent. 12: 1248. 9. 

 Ephialtes dentiventris Hellen, 1915. Soc. Fauna et Flora Fenn., Acta 40: 29. 9. Uncertain 



syn. 

 Ephialtes pfefferi Habermehl, 1918. Ztschr. f. Wiss. Insektenbiol. 13: 165. 9. 



Biology: Stroiny, 1951. Polskie Pismo Ent. 21: 140-144. 

 vitticrus Townes. Que. s. to Pa., w. to Wis. and Kans. 



Dolichomitus vitticrus Townes, 1960. hi Townes and Townes, U. S. Natl. Mus. Bui. 216 (pt. 

 2): 148. cJ, 9. 



Genus ACROPIMPLA Townes 



Selenaspis Roman, 1910. Ent. Tidskr. 31(2-3): 191. Preocc. by Bleeker, 1858; Leonardi, 

 1898. 



Type-species: Hemipimpla alboscutellaris Szepligeti. Orig. desig. 

 Acropimpla Townes, 1960. In Townes and Townes, U. S. Natl. Mus. Bui. 216 (pt. 2): 159. 

 Type-species: Charitopimpla leucostoma Cameron. Orig. desig. Walkley (1967; In 

 Krombein and Burks, U. S. Dept. Agr., Agr. Monog. 2, sup. 2, p. 68) states that 

 Acropimpla must have the same type-species as Selenaspis, but this is incorrect 



